Dynamics of current sheet formation and reconnection in two-dimensional coronal loops

Z. W. Ma, C. S. Ng, Xiaogang Wang, A. Bhattacharjee

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

Current sheet formation and magnetic reconnection in a two-dimensional coronal loop with an X-type neutral line are simulated numerically using compressible, resistive magnetohydrodynamic equations. Numerical results in the linear and nonlinear regimes are shown to be in good agreement with a recent analytical theory [X. Wang and A. Bhattacharjee, Astrophys. J. 420, 415 (1994)]. The topological constraint imposed by helicity-conserving reconnection is discussed. It is found numerically that helicity-conserving reconnection causes the initial X-point structure of the loop to change to Y points, with current sheets at the separatrices encompassing the Y points. Implications for observations are discussed.

Original languageEnglish (US)
Pages (from-to)3184-3193
Number of pages10
JournalPhysics of Plasmas
Volume2
Issue number8
DOIs
StatePublished - Jan 1 1995
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Keywords

  • HELICITY
  • MAGNETIC RECONNECTION
  • MAGNETOHYDRODYNAMICS
  • MHD EQUILIBRIUM
  • PLASMA SIMULATION
  • SOLAR CORONA
  • SOLAR FLARES
  • SOLAR X−RAY BURSTS

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